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Merge commit 'a39d4083cab589d7cd6a13e8a4b8db8875261d75'
[gnulib.git]
/
tests
/
test-floorf2.c
diff --git
a/tests/test-floorf2.c
b/tests/test-floorf2.c
index
d668487
..
2d15a47
100644
(file)
--- a/
tests/test-floorf2.c
+++ b/
tests/test-floorf2.c
@@
-1,5
+1,5
@@
/* Test of rounding towards negative infinity.
/* Test of rounding towards negative infinity.
- Copyright (C) 2007-20
08
Free Software Foundation, Inc.
+ Copyright (C) 2007-20
14
Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@
-16,6
+16,9
@@
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
+/* When this test fails on some platform, build it together with the gnulib
+ module 'fprintf-posix' for optimal debugging output. */
+
#include <config.h>
#include <math.h>
#include <config.h>
#include <math.h>
@@
-24,21
+27,15
@@
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
-#include <stdlib.h>
#include "isnanf-nolibm.h"
#include "isnanf-nolibm.h"
+#include "macros.h"
-#define ASSERT(expr) \
- do \
- { \
- if (!(expr)) \
- { \
- fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
- fflush (stderr); \
- abort (); \
- } \
- } \
- while (0)
+/* MSVC with option -fp:strict refuses to compile constant initializers that
+ contain floating-point operations. Pacify this compiler. */
+#ifdef _MSC_VER
+# pragma fenv_access (off)
+#endif
/* The reference implementation, taken from lib/floor.c. */
/* The reference implementation, taken from lib/floor.c. */
@@
-72,8
+69,12
@@
floorf_reference (DOUBLE x)
if (z > L_(0.0))
{
if (z > L_(0.0))
{
+ /* For 0 < x < 1, return +0.0 even if the current rounding mode is
+ FE_DOWNWARD. */
+ if (z < L_(1.0))
+ z = L_(0.0);
/* Avoid rounding errors for values near 2^k, where k >= MANT_DIG-1. */
/* Avoid rounding errors for values near 2^k, where k >= MANT_DIG-1. */
- if (z < TWO_MANT_DIG)
+
else
if (z < TWO_MANT_DIG)
{
/* Round to the next integer (nearest or up or down, doesn't matter). */
z += TWO_MANT_DIG;
{
/* Round to the next integer (nearest or up or down, doesn't matter). */
z += TWO_MANT_DIG;
@@
-85,6
+86,9
@@
floorf_reference (DOUBLE x)
}
else if (z < L_(0.0))
{
}
else if (z < L_(0.0))
{
+ /* Work around ICC's desire to optimize denormal floats to 0. */
+ if (z > -FLT_MIN)
+ return L_(-1.0);
/* Avoid rounding errors for values near -2^k, where k >= MANT_DIG-1. */
if (z > - TWO_MANT_DIG)
{
/* Avoid rounding errors for values near -2^k, where k >= MANT_DIG-1. */
if (z > - TWO_MANT_DIG)
{
@@
-131,8
+135,10
@@
check (float x)
return 0;
else
{
return 0;
else
{
+#if GNULIB_TEST_FPRINTF_POSIX
fprintf (stderr, "floorf %g(%a) = %g(%a) or %g(%a)?\n",
x, x, reference, reference, result, result);
fprintf (stderr, "floorf %g(%a) = %g(%a) or %g(%a)?\n",
x, x, reference, reference, result, result);
+#endif
return 1;
}
}
return 1;
}
}